<template>
  <view>
    <!-- <my-search :bgcolor="pink" :radius="15"></my-search> -->
    <my-search @click="gotoSearch"></my-search>
    <view class="sroll-view-container">
      <scroll-view class="sroll-view-left" scroll-y="true" :style="{height: wh+'px'}">
        <block v-for="(item,i) in cateList" :key="i">
          <view :class="['scroll-view-left-item' ,i===active?'active':'']" @click="activeChange(i)">{{item.cat_name}}
          </view>
        </block>
      </scroll-view>
      <scroll-view class="sroll-view-right" scroll-y="true" :style="{height: wh+'px'}" :scroll-top="scrollTop">
        <view class="lev-item" v-for="(item2,i2) in catelevel2" :key="i2">
          <view class="lev-item-title">/ {{item2.cat_name}} /</view>
          <view class="lev-img">
            <view class="lev-img-item" v-for="(item3,i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
              <image :src="item3.cat_icon.replace('dev','web')"></image>
              <text>{{item3.cat_name}}</text>
            </view>
          </view>
        </view>
      </scroll-view>
    </view>
  </view>
</template>

<script>
  import badgeMix from "@/mixins/tabbar-badge.js"
  export default {
    mixins: [badgeMix],
    data() {
      return {
        wh: 0,
        cateList: [],
        active: 0,
        // 二级分类的列表
        catelevel2: [],
        scrollTop: 0,
      }
    },

    onLoad() {
      const sysInfo = uni.getSystemInfoSync()
      this.wh = sysInfo.windowHeight - 50
      this.getCateList()

    },
    methods: {
      async getCateList() {
        const {
          data: res
        } = await uni.$http.get('/api/public/v1/categories')
        if (res.meta.status !== 200) return uni.$showMsg()
        this.cateList = res.message
        this.catelevel2 = res.message[0].children
      },
      activeChange(i) {
        this.active = i
        this.catelevel2 = this.cateList[i].children
        this.scrollTop = this.scrollTop === 0 ? 1 : 0
      },
      gotoGoodsList(item3) {
        uni.navigateTo({
          url: '/subpkg/goods_list/goods_list?cid=' + item3.cat_id
        })
      },
      gotoSearch() {
        uni.navigateTo({
          url: '/subpkg/search/search'
        })
      },
    }
  }
</script>

<style lang="scss">
  .sroll-view-container {
    display: flex;

    .sroll-view-left {
      width: 150px;
    }

    .scroll-view-left-item {
      background-color: #f7f7f7;
      line-height: 60px;
      text-align: center;
      font-size: 12px;

      &.active {
        background-color: #ffffff;
        position: relative;

        &::before {
          content: '';
          display: block;
          width: 3px;
          height: 30px;
          background-color: #C00000;
          position: absolute;
          top: 50%;
          left: 0;
          // 实现元素垂直居中效果
          transform: translateY(-50%);
        }
      }
    }
  }

  .lev-item-title {
    font-size: 12px;
    font-weight: bold;
    text-align: center;
    padding: 15px 0;
  }

  .lev-img {
    display: flex;
    flex-wrap: wrap;

    .lev-img-item {
      width: 33.33%;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      margin-bottom: 10px;

      image {
        width: 60px;
        height: 60px;
      }

      text {
        font-size: 12px;
      }
    }
  }
</style>
